Product Overview
The DELLMECO DM 15/55 PTT-MV is a pneumatically driven double diaphragm pump engineered for demanding industrial fluid transfer duties. Manufactured by DELLMECO, a specialist in air operated double diaphragm (AODD) technology, this model operates on a positive displacement, reciprocating diaphragm principle in which compressed air alternately flexes two opposed diaphragms to displace fluid through a four-valve ball check system. Unlike rotating hydraulic pumps, the DM 15/55 PTT-MV contains no pistons, vanes, or gear sets; its sealing is achieved entirely through elastomeric diaphragms, making it a self-priming, dry-run capable unit suited to shear-sensitive, viscous, and abrasive media. The “PTT-MV” designation indicates the pump’s specific configuration of body material, diaphragm elastomer, and ball valve trim, allowing precise media compatibility in aggressive chemical and industrial service.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Air Operated Double Diaphragm Pump (AODD) |
| Model Designation | DM 15/55 PTT-MV |
| Operating Pressure | Standard Industrial Grade (Up to 8 bar air inlet) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (BSP or NPT threaded ports) |
Engineering Features & Advantages
- Precision Performance: Balanced twin-diaphragm air distribution delivers smooth, pulsation-damped flow with excellent self-priming and dry-run capability, eliminating the risk of cavitation damage common to rotating pumps.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust housing and elastomer diaphragm assembly that resists chemical attack, abrasion, and thermal cycling.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including port spacing, air inlet configuration, and mounting footprint for drop-in service.
Typical Industrial Applications
The DELLMECO DM 15/55 PTT-MV is widely deployed in chemical dosing and transfer lines, paint and coating circulation systems, wastewater and slurry handling, and food and pharmaceutical processing where gentle, contamination-free pumping of viscous or shear-sensitive fluids is required. Its air-driven, seal-less design also makes it a preferred choice for hazardous or flammable media transfer in petrochemical and offshore environments.
PRODUCT IMAGES

DELLMECO DM 15/55 PTT-MV Air Operated Double Diaphragm Pump
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine DELLMECO DM 15/55 PTT-MV Pneumatic Pinch Valve. This Italy-made pneumatic component features a robust pinch mechanism, delivering leak-free, reliable fluid control for heavy-duty industrial systems.